Even if you were to buy the game loose without a manual, it will still teach you how to properly play the PTCG step-by-step
Play Rule #13 states: Abilities which refer to other cards owned outside the game (Wishes, Spawnsire, Research, Ring of Ma'ruf) do not function in Commander without prior agreement on their scope from the playgroup. Therefore, Spike is twice banned in Commander, and even if Unstable were allowed, Spike wouldnt be able to be played
Both Anointed Procession and Mondrak, Glory Dominus have the same ability in regards to doubling your tokens
Oh, and props to Sorcerer's Strongbox Simun the Quiet filled the chest with his most precious thoughts
On top of this, if Darkrai gets knocked out, their ability lets them return to the bench with one attached energy and no repercussions